Oil level measuring device for measuring filling level of liquid in container of oil-lubricated engine in motor vehicle, has damping cup and ultrasonic sensor, where damping cup has vertically movable reflecting element

摘要

The device has a damping cup (1) and an ultrasonic sensor (4) arranged at the bottom of the damping cup, where the damping cup has a vertically movable reflecting element. The reflecting element is connected to a float. The damping cup has a relevant ultrasonic marking at the upper end. An electronic control unit is provided with two different operating modes, where the liquid level remains below the upper end of the damping cup in one operating mode and the liquid level remains above the damping cup in another operating mode.